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/*                  Atmel Microcontroller Software Support                      */
/*                       SAM Software Package License                           */
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/* Copyright (c) 2015, Atmel Corporation                                        */
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/**
 * \file
 */

/*-----------------------------------------------------------------------------
 *         Headers
 *----------------------------------------------------------------------------*/

#include "board.h"

/*------------------------------------------------------------------------------
 *         Local Variables
 *----------------------------------------------------------------------------*/

#ifdef PINS_LEDS
	static const Pin pinsLeds[] = PINS_LEDS;
	static const uint32_t numLeds = PIO_LISTSIZE(pinsLeds);
#endif

/*------------------------------------------------------------------------------
 *         Global Functions
 *----------------------------------------------------------------------------*/

/**
 *  Configures the pin associated with the given LED number. If the LED does
 *  not exist on the board, the function does nothing.
 *  \param led  Number of the LED to configure.
 *  \return 1 if the LED exists and has been configured; otherwise 0.
 */
extern uint32_t LED_Configure(uint32_t dwLed)
{
#ifdef PINS_LEDS

	// Check that LED exists
	if (dwLed >= numLeds)
		return 0;

	// Configure LED
	return (PIO_Configure(&pinsLeds[dwLed], 1));
#else
	return 0;
#endif
}

/**
 *  Turns the given LED on if it exists; otherwise does nothing.
 *  \param led  Number of the LED to turn on.
 *  \return 1 if the LED has been turned on; 0 otherwise.
 */
extern uint32_t LED_Set(uint32_t dwLed)
{
#ifdef PINS_LEDS

	/* Check if LED exists */
	if (dwLed >= numLeds)
		return 0;

	/* Turn LED on */
	if (pinsLeds[dwLed].type == PIO_OUTPUT_0)
		PIO_Set(&pinsLeds[dwLed]);
	else
		PIO_Clear(&pinsLeds[dwLed]);

	return 1;
#else
	return 0;
#endif
}

/**
 *  Turns a LED off.
 *
 *  \param led  Number of the LED to turn off.
 *  \return 1 if the LED has been turned off; 0 otherwise.
 */
extern uint32_t LED_Clear(uint32_t dwLed)
{
#ifdef PINS_LEDS

	/* Check if LED exists */
	if (dwLed >= numLeds)
		return 0;

	/* Turn LED off */
	if (pinsLeds[dwLed].type == PIO_OUTPUT_0)
		PIO_Clear(&pinsLeds[dwLed]);
	else
		PIO_Set(&pinsLeds[dwLed]);

	return 1;
#else
	return 0;
#endif
}

/**
 *  Toggles the current state of a LED.
 *
 *  \param led  Number of the LED to toggle.
 *  \return 1 if the LED has been toggled; otherwise 0.
 */
extern uint32_t LED_Toggle(uint32_t dwLed)
{
#ifdef PINS_LEDS

	/* Check if LED exists */
	if (dwLed >= numLeds)
		return 0;

	/* Toggle LED */
	if (PIO_GetOutputDataStatus(&pinsLeds[dwLed]))
		PIO_Clear(&pinsLeds[dwLed]);
	else
		PIO_Set(&pinsLeds[dwLed]);

	return 1;
#else
	return 0;
#endif
}

